Authorities froze bank accounts containing 18.4 million euros in cash and financial investments, and seized a string of luxury properties across Spain.

Egypt requested Spain's help under UN anti-corruption conventions to find and block assets owned by Mubarak, his family, top aides and their related companies, said a statement issued by Spain's national police.

In all, a list of 130 people connected to Mubarak and the former Egyptian regime were passed to Spanish authorities.

Among the assets seized were two houses in La Moraleja – one of Madrid's most desirable residential districts – with a combined value of around seven million euros.

Seven other properties in and around Marbella, the glitzy resort on Spain's south coast that is a popular destination for wealthy Arabs, were seized with an estimated combined worth of around 3 million euros.